Cool getting people to try it, but I don't agree. I've been running Ubuntu for 11 months now and the only way I managed to do it was by killing Windows off entirely. I've done the dual boot thing before and I always found myself booting into Windows for something or rather until finally I wasn't booting Linux at all.

The biggest block is changing your mindset. It's like trying to quit smoking if you really don't want to quit. Take Photoshop for example. The Gimp is a fine alternative for most people(<-look! A qualifying statement!), but it's not Photoshop. I had to get my head around that before I became comfortable with the Gimp and dealt with the frustrations of some things not being where I thought they should be.

Still, I'd hope people can wipe the Linux fan boy forces aside and actually give it a shot. I've been happy as hell since I dumped Windows. MAC users would be a harder sell since they're already running a Unix based OS.